Improvement in harrows



UNITEDSTATES PATENT OFFICE.

WHITMAN BROWN, OF BUTTE lDES MORTS, WISCONSIN.

IMPROVEMENT IN HARROWS.

Specification forming part of Letters Patent No. 136,027, dated February 18, 1873.

To all whom it may con-cem:

Be it known that I, WHITMAN BROWN, of `Butte des Morts, in the county of Winnebago and `in the 'State of Wisconsin, have invented certain new and useful Improvements in Sulky- Harrows and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon makin g a part of this specification.

The nature of my invention consists in the construction and arrangement of a sulky-harrow, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure l is a perspective View of my harrow, and Fig. 2 is a longitudinal section ofthe same.

A represents a bar or beam of suitable width, forming the axle; and on each end of the same is formed a spindle upon which to place the driving-wheel B. On the axle A is secured a platform, C, upon which the drivers seat E is attached, and the tongue D is also secured to said axle. The rotary harrow attached to this sulky-irame is constructed in the following manner: The top plate G and bottom plate H, or castings which hold the arms I I of the harrow together, are made in separate pieces, instead of being cast whole, so as to make it more convenient to construct the harrow, and to take out or put in the arms. The top plate G has flanges a a on its under side for the arms I to go into. The harrow is attached to an upright center-piece or standard, J, by a king bolt, b, that goes through the center of the harrow, and up into the lower end of the standard about eight or ten inches, where it is secured and Vheld by a key,-d, which goes through the standard and through the end of the kingbolt. The plates G and H of the Y harrow are fastened together by a bolt, e, ,through each arm. The standard J passes up through a mortise made in the center of the axle A; and the harrow turns freely on the `king-bolt b at the lower end of the standard. On the two sides of the center piece or standard J are two metal bars, f j', the lower ends of which are turned outward atright angles, and are parallel with the harrow. The vertical parts vof these bars reach up to the top of the center-piece, and are made to slide in grooves cut in the sides of the center-piece or Standard, and held in said grooves by suitable straps or clevi'ses. The lower outer end of each of the bars f is provided with a frictionroller, i, against which the top plate of the harrow runs. In the upper end of each bar f is a slot, through which a lever, K, passes, said lever being pivoted in a slot in the 'upper end of the standard J.

Pressing' down or lifting up this lever pushA es down one of the side bars f, and lifts up the other, by which means the harrow is set or inclined over a little to the onegside or the other, as the case "may be, thereby creat ing a corresponding side draft or harder draft o n the press side, therebycausing the har-v row to have a continual rotary motion when drawn on the ground, the lever being held in place and fastened by means of a pin or bolt through the upright or standard It for that purpose.

On the back side of the center-piece J is another iron bar, f', made the same as the side bars ff, except that it does not reach but about half-way up, and is held by the key-bolt d to the king-bolt. This bar has also a friction-roller, t', O11 its end, and is for the purpose of depressing or elevating the harrow behind, and for steadyin g it. iron bars f j' and j" have each a brace, lf, across the angle, as shown. From the lower end of the center-piece or standard J a chain, m, extends to the under side of the tongue, for the purpose of holding up the forward side of the harrow to prevent its digging into the ground and tipping up7 and thereby to prevent a twisting strain upon the center-piece.

On the platform G is a lever, L, for lifting the harrow up, as shown.

Having thus fully described my invention, what I claim as new7 and desire to secure by Letters Patent, is-

1. The bars f f, as constructed, having frictionrollers t' iV upon their ends, when used in These combination with a regulating-lever and the In testimony that I ola-iin the foregoing' I v top plate of the barrow, as and for the purhave hereunto set my hand and seal this 26th pose setforth. day of November, 1872.

2. The combination of the adjustable barf', WHITMAN BROWN. [L. s.] provided with a frctionro11er,with the plate G Witnesses and standard J, for regulatin g the rear of the P. C'. PETERSON,

harrow7 as is herein fully set forth. R. CROSS. 

